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Finding the Fourth Proportional to 64,479.84, 88,982.70 and 36,192.20

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Solution

The fourth proportional to 64,479.84, 88,982.70 and 36,192.20 is: 49,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,479.84 : 88,982.70 = 36,192.20 : x
  2. Step 2: Convert to fraction form
    64,479.84/88,982.70 = 36,192.20/x
  3. Step 3: Cross multiply
    64,479.84x = 88,982.70 × 36,192.20
  4. Step 4: Simplify right side
    64,479.84x = 3,220,479,674.94
  5. Step 5: Solve for x
    x = 3,220,479,674.94/64,479.84
  6. Step 6: Final answer
    x = 49,945.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.